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Road Logic Disc Frameset

Color
Size

Description

The new Ritchey Road Logic Disc delivers the same amazing ride experience that the bike is known for but adds the stopping power and control of disc brakes. Steeped with more than 40 years of frame-building heritage, innovation, exploration, and lots of riding, the classic lines of this beautiful steel frame and carbon fiber fork unite with modern building techniques and proven materials to deliver a contemporary bicycle that’s wonderfully comfortable for long days in the saddle, nimble and stiff enough to win the sprint for that sign, and adequately adaptable to endure roads that might lack proper pavement.

The frame is built with a heat-treated and triple-butted proprietary Ritchey Logic tube set and features a straight headtube and aggressively short-butted sections optimized for TIG welding that save weight and improve ride quality. The tried and true specs on the frame remain unchanged but now sport a redesigned chainstay for flat-mount disc brake compatibility, thru-axles in the front and rear and a new fork designed specifically for the Road Logic Disc.

Tech Specs

Frame
Materialheat-treated, triple-butted Ritchey Logic steel tubing - TIG welded
Ultra-light forged and machined straight 1-1/8" headtube
Seat tube clamp size28.6mm (2.5Nm max for derailleur clamps and chain guides)
27.2mm seat tube with integrated seat collar (max torque setting: 6Nm)
Bottom bracket68mm - English threaded
142mm spacing (12mm alloy thru-axle included)
Crankset min/max ring size - single36 to 50t / double: 46/30t to 53/39t
Can accommodate 1X or 2X chainrings
Bottle mounts2
External cable routing
WCS headset included (upper IS42/28.6 - 16mm stack height | lower IS42/30)
Replaceable stainless-steel derailleur hanger
Fork
Ritchey WCS Carbon Disc Road Fork included
1-1/8" straight steerer with integrated 45-degree crown race 
Steerer length300mm
Axle-crown371mm
Rake/Offset46mm
100mm spacing (12mm alloy thru-axle included)
30mm maximum spacers below stem
Tire Compatibility
Wheel and tire compatibility700 x 30c tire clearance (depending on tire/rim manufacturer)
Frame max spacing39mm
Fork max spacing40mm
Brake Compatibility
Flat-mount brakes front and rear140mm (160mm max - adaptors available separately)
Frame flat-mount bracket height10mm
Details
Sizes49 / 51 / 53 / 55 / 57 / 59cm
Frame weight1.79Kg (size 55 - w/o thru-axle)
Fork weight390g (with uncut steerer / not including axle)
ColorSlate/Blue or Black/Charcoal

Geometry

Design
Frame Size
49cm
51cm
53cm
55cm
57cm
59cm
A
Top tube (effective)
518
532
548
563
575
590
B
Top tube (actual)
508
521
536
549
561
576
C
Seat tube (c-t)
465
485
505
525
545
565
D
Seat tube angle
75°
74.5°
74°
73.5°
73.5°
73.5°
E
Head tube length
105
120
140
160
180
200
F
Head tube angle
72°
72.5°
73°
73.5°
73.5°
74°
G
BB drop
72
72
72
70
70
70
H
Chainstay
410
410
415
415
415
415
I
Wheelbase
976
981
993
999
1011
1021
J
Standover height
740
757
777
797
816
836
K
Stack
515
531
551
570
589
610
L
Reach
380
385
390
394
400
409
M
Fork rake
46
46
46
46
46
46
N
Fork Length
369
369
369
369
369
369
Axle to crown
371
371
371
371
371
371
Post diameter
27.2
27.2
27.2
27.2
27.2
27.2

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